Mechanism for driving gas-machines



(No Model.)

H. ALLBNDER.

MECHANISM FOR DRIVING GAS MACHINES.

Patented July 5, 1887.

Q Vitmeoaao 9% N.- PETERS, Photo-Lithographer, Washin ton. D. c.

lUNiTE STATES- ArENr triers.

HENRY ALLENDER, OF DETROIT, MICHIGAN.

MECHANISM FORDRIVING GAS-MACHINES.

SPECIFICATION forming part of Letters Patent No. 366,061, dated July 5, 1887.

(No model.)

To ctZZ whom it may concern:

Be it known that I, HENRY ALLENDER, of Detroit, in the county of \Vayne and State of Michigan, have invented a new and useful Improvement in Mechanism for Driving Gas- Machines, of which the following is a specification.

My invention consists in an improved mechanism for driving gas-machines, &c., hereiir after fully described.

The drawing is an elevation.

18 represents the shell of the air-pump of a gas machine, while 14 represents the pump driving-shaft, and 13 a pinion on said shaft.

10 represents a shaft journaled in hanger 19, which is secured to any convenient point of support, usually a joist in the ceiling of the room in which the air-pump is placed, and carries a sprocket-wheel, 8, and pinion 9, secured together.

6 represents a shaftjournaled in hanger 20, supported similarly to hanger 19, and carrying a gear-wheel, 7,which meshes with pinion 9, and a sprocketwheel, 5, both secured and rotating together.

21 represents a shaft journaled in a hanger, 3, secured at a little distance from hanger 20, carrying thereon a sprocket-wheel, 1, and a ratchet-wheel, 2, both secured together.

4. rep resents a pawl pivoted to hanger 3, and engaging with ratchet-wheel 2, so that said ratchet-wheel and wheel 1 can turn only in one direction.

11 represents an endless chain which coir nects sprocket-wheel 8 and sprocket-wheel 13, so that the mot-ion of said wheel 8 is comma nieated to said wheel 13.

22 represents an endless chain of considerable length, which runs over wheels 1 and 5, and 15 represents a driving'weight which is hung by a pulley, 16, on that part of chain 22 (marked 17 which lies between wheels 1 and 5, whereby said weight tends to rotate said wheel 5, and thereby, through wheel 7, pinion 9, wheel 8,. chain 11, and wheel 13, to rotate the driving-shaft 1 1 of the airpump l8. I prefer to use chains rather than ropes or belts, though either of these may be substituted, and wheels 13, 5, 8, and 1 may be of any kind that will not permit the chain, rope, or belt, whichever is used, to slip.

In the drawing I have illustrated these wheels as sprocket-wheels; but any known form of wheel adapted to be used with the transmitting medium employed may be substituted. I

As gas-machines are at present built, the driving-shaft of the air-pump has thereon a spool, round which a rope is wound, and said rope is usually run through suspended multiple pulleys, to the lower one of which is hung the driving-weight. This construction necessitates a long extension of the drivingshaft of the air-pump, causes the rope to wear because it runs at an angle from the ends of the spool to the pulley, and necessitates the introduction of mechanism to keep the pump in motion during the operation of winding up the driving-wheel.

The operation of my invention is as follows: As the shaft of the air-pump is driven by an endless belt or chain, the wheel 13 can be placed close to the shell of the pump, thus doing away with the long extension of the driving-shaft. When the weight l5'descends, so that it is neeessaryto wind it up, this is done by pulling down on the right-hand part of the lowest bight of the chain 22, which causes wheel 1 to rotate in the direction permitted by the pawl 4, and raises the weight without at any time interfering with its action on wheel 5, and the instant the winding operation ceases pawl 1 prevents reverse rotating of wheel 1, and the weight 15 ean'only descend as fast as is necessary to drive the pump. I

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination with two hangers, each carrying a shaft, on one of which isjournaled a wheel, 1, and a ratchet-wheel, 2, controlled by a pawl, 4, and on the other of which are journaled wheels 7 and 5, an endless chain passing over one of the wheels on each of said shafts, and a driving-weight on said endless chain between said shafts, substantially as shown and described.

2. In combination with a shaft, 14, and a wheel,13, secured on said shaft, an endless belt or chain, a counter-shaft, wheel on said counter-shaft, multiplying gear for driving said countershaft, and an endless chain passing over a wheel on said countersha'ft and over a wheel provided with a ratchet-wheel and paw], and a weight upon the chain bepassing over said wheels, andadriving-weight tween said wheels, substantially as and for hung bya pulley from said chain between said the purposes set forth.

wheels, substantially as shown and described. 10- 3. A driving mechanism consisting of two 5 wheels, one connected by gearing with the shaft to be driven, andthe other provided .with a pawl and ratchet, an endless chain HENRY ALLENDER. WVitnesses:

O. M. MASON, HENRY B. LOTHROP. 

